linux-kernel - Re: [PATCH v1 1/1] gpiolib: Remove duplicative check in gpiod_find_and

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Date:   Wed, 15 Mar 2023 10:48:16 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v1 1/1] gpiolib: Remove duplicative check in gpiod_find_and_request()

On Thu, Mar 9, 2023 at 7:56 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> The gpiod_find_by_fwnode() already checks for NULL and returns
> correct error code in case fwnode is invalid. Drop the respective
> check and assignment in the gpiod_find_and_request().
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/gpio/gpiolib.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
> index 8ecfe3afde1e..333ccd44e2b2 100644
> --- a/drivers/gpio/gpiolib.c
> +++ b/drivers/gpio/gpiolib.c
> @@ -3927,13 +3927,10 @@ static struct gpio_desc *gpiod_find_and_request(struct device *consumer,
>                                                 bool platform_lookup_allowed)
>  {
>         unsigned long lookupflags = GPIO_LOOKUP_FLAGS_DEFAULT;
> -       struct gpio_desc *desc = ERR_PTR(-ENOENT);
> +       struct gpio_desc *desc;
>         int ret;
>
> -       if (!IS_ERR_OR_NULL(fwnode))
> -               desc = gpiod_find_by_fwnode(fwnode, consumer, con_id, idx,
> -                                           &flags, &lookupflags);
> -
> +       desc = gpiod_find_by_fwnode(fwnode, consumer, con_id, idx, &flags, &lookupflags);
>         if (gpiod_not_found(desc) && platform_lookup_allowed) {
>                 /*
>                  * Either we are not using DT or ACPI, or their lookup did not
> --
> 2.39.1
>

Applied, thanks!

Bart